Home / 85,149.64-127,744.32-25,985.20

Finding the Fourth Proportional to 85,149.64, 127,744.32 and 25,985.20

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Solution

The fourth proportional to 85,149.64, 127,744.32 and 25,985.20 is: 38,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.64 : 127,744.32 = 25,985.20 : x
  2. Step 2: Convert to fraction form
    85,149.64/127,744.32 = 25,985.20/x
  3. Step 3: Cross multiply
    85,149.64x = 127,744.32 × 25,985.20
  4. Step 4: Simplify right side
    85,149.64x = 3,319,461,704.06
  5. Step 5: Solve for x
    x = 3,319,461,704.06/85,149.64
  6. Step 6: Final answer
    x = 38,983.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.